وَالْقِسْمُ الثَّانِي إِنَّمَا يَتْبَعُ مَتْبُوعَهُ فِي الْخَمْسَةِ الْأُوَلِ فَقَطْ، أَعْنِي الْإِعْرَابَ وَالتَّعْرِيفَ وَالتَّنْكِيرَ.
Translation: The second kind—relational naʿt—follows its noun only in the first five features: nominative, accusative, genitive, definite and indefinite.
The total is 3 + 2 = 5. The relational adjective normally remains singular even when the matbūʿ is dual or plural. Its gender follows the related noun, while its case and definiteness follow the matbūʿ.